Dungeon Master Assistance

I converted this monster to D&D Next. I may have to re-do it once the official new rules are published. It is unusual in that it is not your typical swarm. It can contain any number of rats and the more rats the more powerful the swarm. Let me know how you think I did on this. Comments are always welcome.

An individual cranium rat is almost indistinguishable from a normal rodent, except that a portion of its large brain is exposed and pulses with a soft glow. Singly, the creatures are also virtually identical to normal rats, but they are never encountered singly.

Download the PDF file here: Cranium Rat